Installation, Operation and Maintenance Manual
IO-70060 RevC 12-17
6
INSTALLATION
Pre-Plan your installation. You need to accomplish the following:
•
Meet all National and Local codes (NEC® Article 285 and CEC address SPDs).
•
Confirm System voltage to SPD voltage (a 120V SPD will fail instantly on 240V, 277V, etc.).
•
Mount SPD as close to panel or equipment as possible to keep leads short (long leads hurt
performance).
•
Ensure leads are as short and straight as possible, including neutral and ground. If using a breaker,
use a breaker position that is close to the SPD and the panel’s neutral and ground.
•
If using a breaker, recommended breaker size is 30A due to 10 AWG conductor.
•
Make sure system is grounded per NEC® and CEC and clear of faults before energizing SPD
(inadvertent system problem may fail SPD).
•
Never Hi-Pot test Any SPD (will prematurely fail SPD).
•
Do not install Model 425 through the bottom of a NEMA 3R panel. (Accumulating water could drip
into the SPD, prematurely failing the SPD a sealed pipe nipple installed in the SPD rising above the
water line may be a solution).
1.
Use voltmeter to check voltages and ensure correct SPD. See Data Sheet for specs and wire-outs.
2.
Determine Mounting location – weather resistant equipment may be required.
3.
If SPD has optional Dry Contact Flush Mount Kit, or Remote Indicator, pre-plan their installation.
See Figure 3. (If flush mounting, be careful to not drop SPD into wall).
4.
Remove power from panel/source. Confirm panel/source is de-energized.
5.
Identify breaker location and SPD location. Position SPD such that LEDs are best visible.
6.
Mount SPD – weather resistant applications require additional sealing, etc. (not included).
• Remove an appropriately sized knockout from panel.
• Connect conductors as appropriate – short and straight as possible (System Hi-Leg should be
connected to SPD Phase B).
7.
Label or mark conductors as appropriate (neutral: white, ground: green, energized: black, hi-leg:
orange).
8.
Make sure system is bonded per NEC® and CEC and is clear of hazards or faults before energizing
(Not bonding N-G per NEC® and CEC will fail SPDs: this is the #1 cause of SPD failures).
9.
Energize and confirm proper operation of green LED indicators and/or options.
FIGURE 2: LEADS SHORT & STRAIGHT
X
NOT
GOOD
GOOD
Cut off
Excess Length
Do Not Loop or Coil
Short & Straight
