SPT-1 cable concealed in wall cavities for low voltage lighting

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AZsparky

AZsparky

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Scottsdale, AZ
Any problem with SPT -1 cable being concealed in wall cavities for low voltage lighting? Fed by magnetic transformers, with probable secondary side over current protection. I have not been able to verify this as of yet. There's a ton of it all over this home and believe it was original wiring to build date.

Thanks!
 
What type of Low Voltage lighting? On some LED it may be Ok but on a higher wattage system it would be a problem. What class transformer is it?
 
What type of Low Voltage lighting? On some LED it may be Ok but on a higher wattage system it would be a problem. What class transformer is it?[/QUOTE]


It's miniature incandescent strip lighting under the cabinet. I always thought that even LV cables when concealed in walls had to be romex. The transformers are standard magnetic transformers with an integral secondary side circuit breaker. Don't see a class 2 designation on them...
 
Check and see if your not looking at LV underground sunlight resestant wire. Looks like SPT-1 but insulation is much thicker. That's what is used here.
 
Cavie said:
Check and see if your not looking at LV underground sunlight resestant wire. Looks like SPT-1 but insulation is much thicker. That's what is used here.
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It is labeled SPT-1 right on the cream colored jacket. The insulation is fairly thick, but still, is this stuff rated for (concealed in wall) 12 volt lighting application?
 
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