Is it allowed to extend the lead on a BCPM split core CT?
If so, What is the maximum recommended length of the lead extension?
BCPM split core CT
Extending CT Leads for BCPM split core CT
Customer is requesting to extend the CT length with minimal to no accuracy changes.
Yes, you may extend the CT leads.
6.1m (20ft) is the our recommended maximum length for CT extension leads.
One of our recommended accessories, the BCPMSCCT0R20, is such a 6.1m lead, referred to on page xxiii of the PowerLogic¿ BCPMSC
Branch Circuit Power Meter with Split-Core CTs Panelboard Monitoring System Installation Guide, available here:
See also RESL191029 which discusses wire size and attenuation.