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Monoprice SlimRun Cat6a Ethernet Cables: 10-Pack 10' (Yellow) $15, 5-Pack 5' EXPIRED
2 for $10
$18.10
& More + Free S/H
Monoprice has SlimRun Cat6a Ethernet Cables on sale below when you apply corresponding promo codes (if applicable). Shipping is free. Thanks Discombobulated
- 5-Pack 5' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Yellow)
- 2 for $10 w/ Promo Code: SR5PK
- Add 2x Qty to cart
- 10-Pack 10' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Yellow) $15
- 5-Pack 25' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Black) $17.50
- 5-Pack 30' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Black) $20
- 5-Pack 50' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Black) $28
- 10-Pack 20' Monoprice Cat6A 24AWG 10G Ethernet Network Patch Cable (Blue) $27
- 5-Pack 5' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Green)
- 2 for $10 w/ Promo Code: SR5PK
- Add 2x Qty to cart
- 5-Pack 20' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable (Blue) $15
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Original Post
Written by
Edited February 6, 2020
at 01:15 AM
Monoprice
For those interested
Note, must apply the listed promo code to receive discount if shown. Shipping is free.
For those interested
Note, must apply the listed promo code to receive discount if shown. Shipping is free.
- 5-Pack 5' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Yellow)
- 2 for $10
- Promo Code: SR5PK
- 5-Pack 5' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Green) OOS
- 2 for $10
- Promo Code: SR5PK
- 5-Pack 20' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Blue) $15 >NLA
- 10-Pack 10' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Yellow) $15
- 5-Pack 25' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Black) $17.50
- 5-Pack 30' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Black) $20
- 5-Pack 50' Monoprice SlimRun Cat6A RJ45 30AWG Pure Bare Copper Wire Ethernet Patch Cable [monoprice.com] (Black) $28
- 10-Pack 20' Monoprice Cat6A 24AWG 10G Ethernet Network Patch Cable [monoprice.com] (Blue) $27
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About the OP
Community Wiki
Last Edited by jagoodie
January 29, 2020
at
06:27 PM
FYI - thinner wires may be problematic for POE applications but work great otherwise
Basic Voltage Drop Law
Vdrop = IR
P(loss) = V(drop)*I
V(drop) = I*R
Substitute for V and the formula for power loss is I^2*R
where:
I : the current through the object, measured in amperes
R : the resistance of the wires, measured in ohms
comparing these cables to a cat6/6A which has 23 AWG copper wires:
AWG inch mm per inch per cm kcmil mm2 O/km O/kFT
23 0.0226 0.573 44.3 17.4 0.509 0.258 66.79 20.36
30 0.0100 0.255 99.7 39.3 0.101 0.0509 338.6 103.2
103/20 = about 5
So a 30 AWG wire has 5x the resistance vs a 23 AWG wire
basically you're looking at losing 5x more power when using a 30 AWG wire compared to a 23 AWG wire.
ref:
https://www.calculator.
Basic Voltage Drop Law
Vdrop = IR
P(loss) = V(drop)*I
V(drop) = I*R
Substitute for V and the formula for power loss is I^2*R
where:
I : the current through the object, measured in amperes
R : the resistance of the wires, measured in ohms
comparing these cables to a cat6/6A which has 23 AWG copper wires:
AWG inch mm per inch per cm kcmil mm2 O/km O/kFT
23 0.0226 0.573 44.3 17.4 0.509 0.258 66.79 20.36
30 0.0100 0.255 99.7 39.3 0.101 0.0509 338.6 103.2
103/20 = about 5
So a 30 AWG wire has 5x the resistance vs a 23 AWG wire
basically you're looking at losing 5x more power when using a 30 AWG wire compared to a 23 AWG wire.
ref:
https://www.calculator.
84 Comments
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I assure you, they accounted for 'physics' when they wrote 802.3at Type2 "PoE+" and the resistance numbers you're quoting are actually incorrect to boot. How about we also look up the POE+ and cable specs?
- max cable resistance is 12.5 ohms
- max voltage drop is 7.5v (based on PSE vs PD)
- max power loss is 4.5w (based on PS vs PD)
MonoPrice lists: 37.6 ohms/100m so the 50' (15m) cable is 5.5 ohms.
22g/23g cat6 usually comes in ~9-9.5 ohms/100m
Calculate your run length + patch cord and decide accordingly. If thin patch cables are needed due to cable count, aesthetics, or other reasons make sure your total run is in spec.
e.g. 25m plenum cat6 + 2m patch = 3.13 ohms and is well with spec.
*Mic drop*
But wait... calculating for volts and then talking about power (watts)? Those are NOT the same thing/unit/measurement. Might as well say you've got a 18 gallon gas tank therefore your MPGs are better. If we want to work out the math for fun:
P(loss) = V(drop)*I
V(drop) = I*R
Substitute for V and the formula for power loss is I^2*R
- 600ma (0.6A) max @ 12.5 ohms max = 7.5V (which is exactly what the PoE spec calls for)
- Power loss would thus be 0.6^2*12.5 = 4.5w (which, shockingly, is exactly to spec)
And EXTRA ALSO - this is *only* for PoE delivery. It has NOTHING to do with attenuation which is *far* more relevant for 1G/10G runs. Folks having problems with these cables are almost certainly having signal issues, not PoE, and especially so if they've got longer runs near/at/over max spec.
recommend not using these for PoE and go instead with cable that has copper 23/24 AWG wires for PoE
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Edit to add - I like these cables a lot, I have about a dozen of them now. They are nice and slim yet rugged. Not totally "lay flat" but not nearly as bad as most ethernet cables that keep that coil shape.
Thanks OP, picked up two packs.
recommend not using these for PoE and go instead with cable that has copper 23/24 AWG wires for PoE
recommend not using these for PoE and go instead with cable that has copper 23/24 AWG wires for PoE
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Physics
The ability of a wire to transmit power is based on the surface area, the smaller the diameter of the wire the higher the resistance, heat, power loss - which means less efficiency and less distance the cable can run.
http://poe-world.com/Calculator/
Basically: you really do not want to use thin wires to transmit power