I am installing an outide lite on a vinyl siding mounting block.
Electricity is available 5 feet away via a duplex outside GFI vinyl
siding mounted outlet.
Question: Can I run 14/3 under the vinyl siding connecting the source
to the lite?
If so, what type romex do I need? NM-B?
*Use MC cable. Attach a bonding bushing to the MC connector and put a
grounding pigtail on the bushing. You may need to use an angle connector to
go into the siding block from behind.
Why do you need a 3 wire?
Also: If that duplex outlet circuit is currently fed from a 20 amp
breaker (using 12/2 wire), under many codes that added wire should be
also be 12/2 with ground. Not 14/2!
OR change the circuit breaker for that circuit to 15 amp. We did
exactly that when we realised that some armoured cable covered by to a
nearby shed shed was 'perhaps' AWG14! So; to be sure we changed that
breaker to 15 amp.
Reason for mentioning s that many wiring jobs back some years ago
used AWG12 (20 amp breaker) for outlet wiring and AWG14 (15 amp
breaker) for lighting circuits and did NOT mix outlets and lights on
the same circuit. These days am seeing, under codes here, 14AWG, mixed
outlets and lights; all from 15 amp breakered circuits.
By using 14/2 tapped onto a 20 amp circuit, the home owner could
(depends on local codes?) inadvertently contravene electrical and
Probably work OK for years! With never a problem! BUT if there was a
problem fire investigators and or insurance might decline to say it
The amount of current taken by an outside light not large and well
within capabilities of the wire. But could be legal implications!!!!!
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