Installation 7
Installation
Precautions
DANGER — HAZARDOUS VOLTAGES
WARNING
- These installation/servicing instructions are for use by qualified personnel
only. To avoid electrical shock, do not perform any servicing other than that contained in
the operating instructions unless you are qualified to do so.
Always adhere to the following checklist:
1) Only qualified personnel or
licensed electricians
should install the WattNode meter. The
mains voltages of 120 Vac to 600 Vac can be lethal!
2) Follow all applicable local and national electrical and safety codes.
3) Install the meter in an electrical enclosure (panel or junction box) or in a limited access
electrical room.
4) Verify that circuit voltages and currents are within the proper range for the meter model.
5) Use only UL listed or UL recognized current transformers (CTs) with built-in burden resistors,
that generate 0.333 Vac (333 millivolts AC) at rated current.
Do not use current output
(ratio) CTs such as 1 amp or 5 amp output CTs: they will destroy the meter and may
create a shock hazard.
See
for CT maximum ratings.
6) Ensure that the line voltage input leads to the meter are protected by fuses or circuit breakers
(not needed for the neutral wire). See
for details.
7) Equipment must be disconnected from the HAZARDOUS LIVE voltages before access.
8) The terminal block screws are
not
insulated. Do not contact metal tools to the screw termi-
nals if the circuit is energized!
9) Do not place more than one line voltage wire in a screw terminal; use wire nuts instead. You
may use more than one CT wire or communication interface wire per screw terminal.
10) Before applying power, check that all the wires are securely installed by tugging on each wire.
11) Do not install the meter where it may be exposed to temperatures below –30°C or above
55°C, excessive moisture, dust, salt spray, or other contamination. The meter requires an
environment no worse than pollution degree 2 (normally only non-conductive pollution;
occasionally, a temporary conductivity caused by condensation must be expected).
12) Do not drill mounting holes using the meter as a guide; the drill chuck can damage the screw
terminals and metal shavings can fall into the connectors, causing an arc risk.
13) If the meter is installed incorrectly, the safety protections may be impaired.
